Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. An active matrix organic light-emitting diode (AMOLED) doubled-sided display, which comprises: a substrate and an OLED array layer disposed on the substrate, the OLED array layer comprising a plurality of top-emitting OLED units and a plurality of bottom-emitting OLED units arranged in an array, wherein the plurality of top-emitting OLED units and the plurality of bottom-emitting OLED units are arranged alternately in a horizontal direction and a vertical direction; wherein each of the plurality of top-emitting OLED units comprises a first anode, an organic layer, and a first cathode arranged in a stacked structure and each of the plurality of bottom-emitting OLED units comprises a second anode, an organic layer, and a second cathode arranged in a stacked structure, the first anode being thicker than the second anode, the first anode being reflective and the second cathode being light-transmissive, wherein the second anode is formed of a first anode film that is transmissive to light and the first anode is formed of the first anode film and a second anode film located on the first anode film at a location corresponding to each of the plurality of the top-emitting OLED units, the second anode film being reflective and thicker than the first anode film; and the second cathode being thicker than the first cathode, the first cathode being light-transmissive and the second cathode being reflective; wherein the plurality of top-emitting OLED units and the plurality of bottom-emitting OLED units are alternate with each other in both the horizontal direction and the vertical direction such that each of the plurality of top-emitting OLED units is adjacent to one of the plurality of bottom-emitting OLED units in each of the horizontal direction and the vertical direction; and each of the plurality of bottom-emitting OLED units is adjacent to one of the plurality of top-emitting OLED units in each of the horizontal direction and the vertical direction.
2. The AMOLED double-sided display as claimed in claim 1 , wherein the first anode and the second anode are formed respectively by two vacuum evaporation processes each of which is carried out with a mask.
An AMOLED double-sided display system addresses the challenge of integrating high-quality emissive displays on both sides of a substrate while maintaining manufacturing efficiency and performance. The display includes a substrate with a first anode on one side and a second anode on the opposite side, each formed through separate vacuum evaporation processes using masks. The first and second anodes are electrically isolated from each other, allowing independent control of the display elements on each side. The vacuum evaporation processes ensure precise deposition of anode materials, while the use of masks enables accurate patterning to define the anode regions. This configuration enables dual-sided emission without interference between the two display layers, supporting applications requiring simultaneous or independent content display on both sides. The system may also include organic light-emitting layers and a cathode layer, with the anode layers serving as the primary conductive interfaces for driving the emissive elements. The double-sided design enhances versatility in display applications, such as foldable devices, interactive signage, or wearable electronics, where space efficiency and multi-directional visibility are critical. The use of vacuum evaporation with masks ensures high-resolution patterning and consistent performance across both display surfaces.
3. The AMOLED double-sided display as claimed in claim 1 , wherein the OLED array layer comprises a first cathode film and a second cathode film, and the second cathode film is formed on an upper surface of the first cathode film corresponding to the plurality of bottom-emitting OLED units by a vacuum evaporation process with a mask; the first cathode is formed by a part of the first cathode film corresponding to each of the plurality of top-emitting OLED units, and the second cathode is formed by a part of the first cathode film and the second cathode film corresponding to each of the plurality of bottom-emitting OLED units.
This invention relates to a double-sided AMOLED display designed to address the challenge of integrating both top-emitting and bottom-emitting OLED units in a single display structure. The display includes an OLED array layer with a first cathode film and a second cathode film. The second cathode film is selectively deposited on the upper surface of the first cathode film, specifically over the bottom-emitting OLED units, using a vacuum evaporation process with a mask. The first cathode film serves as the cathode for the top-emitting OLED units, while the combined first and second cathode films form the cathode for the bottom-emitting OLED units. This dual-cathode structure enables efficient light emission in both directions, improving display performance and versatility. The selective deposition ensures precise alignment of the cathode layers with the respective OLED units, optimizing light extraction and reducing manufacturing complexity. The invention enhances display functionality by enabling simultaneous top and bottom emission, making it suitable for applications requiring dual-sided visibility.
4. The AMOLED double-sided display as claimed in claim 1 , wherein the plurality of top-emitting OLED units and the plurality of bottom-emitting OLED units together form an OLED unit array having rows and columns, wherein the plurality of top-emitting OLED units and the plurality of bottom-emitting OLED units are arranged alternately in each of the rows and each of the columns.
This invention relates to a double-sided AMOLED (Active Matrix Organic Light Emitting Diode) display designed to address the limitations of conventional single-sided displays. The display incorporates an array of OLED units arranged in rows and columns, where each unit is either a top-emitting or bottom-emitting OLED. The top-emitting OLED units emit light outward from the front side of the display, while the bottom-emitting OLED units emit light outward from the back side. The key innovation lies in the alternating arrangement of these units within each row and column, ensuring uniform light emission across both sides. This configuration enables simultaneous viewing from both the front and back of the display, enhancing versatility in applications such as interactive signage, dual-sided mobile devices, or transparent displays. The alternating pattern prevents visual interference between the top and bottom emissions, optimizing brightness and contrast for both viewing directions. The display structure may also include additional layers for encapsulation, electrical connections, and substrate support to maintain durability and performance. This design overcomes the challenge of achieving high-quality, synchronized dual-sided display output without compromising image clarity or energy efficiency.
5. The AMOLED double-sided display as claimed in claim 4 , wherein during displaying, in the OLED unit array, for a positive integer i, an i-th top-emitting OLED unit from left in each row of the rows receives a same image signal as an i-th bottom-emitting OLED unit from right in said each row of the rows.
This invention relates to an AMOLED (Active Matrix Organic Light Emitting Diode) double-sided display system designed to enhance visual consistency and reduce manufacturing complexity. The display comprises an array of OLED units arranged in rows, where each row includes both top-emitting and bottom-emitting OLED units. The key innovation is the symmetric arrangement of image signals across the display. For each row, the i-th top-emitting OLED unit from the left receives the same image signal as the i-th bottom-emitting OLED unit from the right. This symmetry ensures that when viewed from either side, the display presents a mirrored or consistent image, depending on the application. The system may also include a control circuit to manage signal distribution and a substrate to support the OLED units. This design simplifies manufacturing by reducing the need for separate signal paths for each side and improves visual uniformity by ensuring identical or complementary image rendering on both display surfaces. The invention is particularly useful in applications requiring dual-sided visibility, such as digital signage, mobile devices, or interactive displays.
6. An active matrix organic light-emitting diode (AMOLED) doubled-sided display, which comprises: a substrate and an OLED array layer disposed on the substrate, the OLED array layer comprising a plurality of top-emitting OLED units and a plurality of bottom-emitting OLED units arranged in an array, wherein the plurality of top-emitting OLED units and the plurality of bottom-emitting OLED units are arranged alternately in a horizontal direction and a vertical direction; wherein each of the plurality of top-emitting OLED units comprises a first anode, an organic layer, and a first cathode arranged in a stacked structure and each of the plurality of bottom-emitting OLED units comprises a second anode, an organic layer, and a second cathode arranged in a stacked structure, the first anode being thicker than the second anode, the first anode being reflective and the second cathode being light-transmissive, wherein the second anode is formed of a first anode film that is transmissive to light and the first anode is formed of the first anode film and a second anode film located on the first anode film at a location corresponding to each of the plurality of the top-emitting OLED units, the second anode film being reflective and thicker than the first anode film; and the second cathode being thicker than the first cathode, the first cathode being light-transmissive and the second cathode being reflective; wherein the plurality of top-emitting OLED units and the plurality of bottom-emitting OLED units are alternate with each other in both the horizontal direction and the vertical direction such that each of the plurality of top-emitting OLED units is adjacent to one of the plurality of bottom-emitting OLED units in each of the horizontal direction and the vertical direction; and each of the plurality of bottom-emitting OLED units is adjacent to one of the plurality of top-emitting OLED units in each of the horizontal direction and the vertical direction; wherein the first anode and the second anode being formed respectively by two vacuum evaporation processes each of which is carried out with a mask; wherein the OLED array layer comprises a first cathode film and a second cathode film, and the second cathode film being formed on an upper surface of the first cathode film corresponding to the plurality of bottom-emitting OLED units by a vacuum evaporation process with a mask; the first cathode being formed by a part of the first cathode film corresponding to each of the plurality of top-emitting OLED units, and the second cathode being formed by a part of the first cathode film and the second cathode film corresponding to each of the plurality of bottom-emitting OLED units.
An active matrix organic light-emitting diode (AMOLED) display with dual-sided emission features a substrate supporting an OLED array layer containing top-emitting and bottom-emitting OLED units arranged alternately in both horizontal and vertical directions. Each top-emitting unit includes a reflective first anode, an organic layer, and a transmissive first cathode, while each bottom-emitting unit includes a transmissive second anode, an organic layer, and a reflective second cathode. The first anode is thicker and reflective, formed by a transmissive first anode film and a reflective second anode film deposited only over top-emitting units using masked vacuum evaporation. The second cathode is thicker and reflective, formed by a combination of a transmissive first cathode film and a reflective second cathode film deposited only over bottom-emitting units. The alternating arrangement ensures each top-emitting unit is adjacent to a bottom-emitting unit in all directions, enabling simultaneous display output on both sides. The fabrication process involves multiple masked vacuum evaporation steps to selectively deposit anode and cathode layers for the respective OLED units. This design enables high-resolution dual-sided displays with efficient light emission in both directions.
7. The AMOLED double-sided display as claimed in claim 6 , wherein the plurality of top-emitting OLED units and the plurality of bottom-emitting OLED units together form an OLED unit array having rows and columns, wherein the plurality of top-emitting OLED units and the plurality of bottom-emitting OLED units are arranged alternately in each of the rows and each of the columns.
This invention relates to a double-sided AMOLED (Active Matrix Organic Light Emitting Diode) display designed to provide simultaneous viewing on both sides of the display panel. The technology addresses the challenge of creating a display that can emit light in opposite directions without compromising image quality or efficiency. The display comprises an array of OLED units arranged in rows and columns, where each unit is either a top-emitting or bottom-emitting OLED. These units are positioned alternately in both the rows and columns, ensuring uniform distribution of light emission across the display. The top-emitting OLEDs direct light outward from the front side of the panel, while the bottom-emitting OLEDs direct light outward from the rear side. This alternating arrangement optimizes light output and reduces interference between the two sets of OLEDs, enhancing overall display performance. The invention enables applications where dual-sided visibility is critical, such as public information displays, interactive kiosks, or wearable devices with dual-screen functionality. The design ensures that both sides of the display maintain high brightness, contrast, and resolution, addressing limitations of traditional single-sided displays in scenarios requiring bidirectional visibility.
8. The AMOLED double-sided display as claimed in claim 7 , wherein during displaying, in the OLED unit array, for a positive integer i, an i-th top-emitting OLED unit from left in each row of the rows receives a same image signal as an i-th bottom-emitting OLED unit from right in said each row of the rows.
This invention relates to AMOLED (Active Matrix Organic Light Emitting Diode) double-sided displays, addressing the challenge of efficiently displaying mirrored or synchronized content on both sides of a display panel. The display comprises an OLED unit array with top-emitting and bottom-emitting OLED units arranged in rows. Each row contains both top-emitting and bottom-emitting units, where the top-emitting units emit light outward from the top surface, while the bottom-emitting units emit light outward from the bottom surface. The display is designed such that, during operation, for any given row, the i-th top-emitting OLED unit from the left receives the same image signal as the i-th bottom-emitting OLED unit from the right. This ensures that the content displayed on the top and bottom surfaces is mirrored or synchronized, allowing for dual-sided viewing with consistent visual output. The arrangement optimizes display uniformity and reduces complexity in signal processing by leveraging symmetrical signal distribution. This design is particularly useful in applications requiring dual-sided displays, such as digital signage, interactive kiosks, or portable devices with dual-view functionality.
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April 28, 2020
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